Having done this quest for the first time ever today, I'll throw in my thoguhts. While The World Razer does have a pre-existing story, I don't think a story involving him will happen. Since he is on Belsavis, I would presume he is a Rakata so dangerous he was imprisoned. On that assumption, I don't think BW would make another Rakata Ops boss. Also, his dialogue points to his destructive powers not being immediately available, saying that I would be dust long before he came to destroy things. He used that statement to try to convince me to help him. Then, after I tell him I'm gonna seal him away, he curses me saying that my children's children will burn. On top of all of this, he would most likely never re-emerge because there was a light/dark decision involving is fate and that type of stuff is nearly impossible to write around.